Inspecting JMS Message Headers

Consumers and services use different context mechanisms to access the JMS message header properties. However, both mechanisms return the header properties as a org.apache.cxf.transports.jms.context.JMSMessageHeadersType object.

Getting the JMS Message Headers in a Service

To get the JMS message header properties from the WebServiceContext object, do the following:

Obtain the context as described in Obtaining a context.
Get the message headers from the message context using the message context's get() method with the parameter org.apache.cxf.transports.jms.JMSConstants.JMS_SERVER_HEADERS.

Example 20.12 shows code for getting the JMS message headers from a service's message context:

Example 20.12. Getting JMS Message Headers in a Service Implementation

import org.apache.cxf.transport.jms.JMSConstants;
import org.apache.cxf.transports.jms.context.JMSMessageHeadersType;
            
@WebService(serviceName = "HelloWorldService", 
                           portName = "HelloWorldPort",
                           endpointInterface = "org.apache.cxf.hello_world_jms.HelloWorldPortType",
                           targetNamespace = "http://cxf.apache.org/hello_world_jms")
  public class GreeterImplTwoWayJMS implements HelloWorldPortType
  {
    @Resource
    protected WebServiceContext wsContext;
    ...

    @WebMethod
    public String greetMe(String me)
    {
      MessageContext mc = wsContext.getMessageContext();
      JMSMessageHeadersType headers = (JMSMessageHeadersType) mc.get(JMSConstants.JMS_SERVER_HEADERS);
       ... 
     }
      ...
}

Getting JMS Message Header Properties in a Consumer

Once a message is successfully retrieved from the JMS transport you can inspect the JMS header properties using the consumer's response context. In addition, you can see how long the client waits for a response before timing out.

You can To get the JMS message headers from a consumer's response context do the following:

Get the response context as described in Obtaining a context.
Get the JMS message header properties from the response context using the context's get() method with org.apache.cxf.transports.jms.JMSConstants.JMS_CLIENT_RESPONSE_HEADERS as the parameter.

Example 20.13 shows code for getting the JMS message header properties from a consumer's response context.

Example 20.13. Getting the JMS Headers from a Consumer Response Header

import org.apache.cxf.transports.jms.context.*;
// Proxy greeter initialized previously
BindingProvider  bp = (BindingProvider)greeter;
Map<String, Object> responseContext = bp.getResponseContext();
JMSMessageHeadersType responseHdr = (JMSMessageHeadersType)
                           responseContext.get(JMSConstants.JMS_CLIENT_REQUEST_HEADERS);
...
}

The code in Example 20.13 does the following:

	Casts the proxy to a `BindingProvider`.
	Gets the response context.
	Retrieves the JMS message headers from the response context.